Re: black screen at start (if boot after a suspend)
On Wed, Jan 08, 2014 at 12:32:08PM -0300, laurent debian wrote:
> Hi all,
> I am having the following problem.
> On a laptop, I sometimes let the system shut down due to low battery
> (I suspect there is other triggers possible but II am sure of this
> one).
> Then on next boot I will end up with a black screen with the
> undersocre in the top left corner. System seems to be running ok
> tough I can not even switch to a terminal. If I press the power
> button (configure to shutdown the computer) I can reboot normally.
> If I hold it to do an "Hard" shut down this problem will reappear on
> next boot.
> I am use an HP laptop on jessie/sid with dual (muxed) gpu ati/intel.
> I use a script to switch OFF the radeon agp at boot. (echo OFF >
> /sys/kernel/debug/vga/switcheroo/switch)
Your laptop is using some form of hibernation/suspension --
probably suspend-to-disk -- and when it tries to awaken from
that state, it is not reinitializing your video card properly.
Fixing suspend-to-disk, or else configuring your laptop to shut
down at 5% power rather than suspend, will solve your problem.
-dsr-
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